/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:29:27,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:29:27,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:29:27,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:29:27,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:29:27,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:29:27,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:29:27,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:29:27,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:29:27,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:29:27,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:29:27,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:29:27,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:29:27,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:29:27,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:29:27,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:29:27,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:29:27,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:29:27,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:29:27,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:29:27,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:29:27,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:29:27,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:29:27,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:29:27,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:29:27,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:29:27,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:29:27,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:29:27,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:29:27,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:29:27,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:29:27,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:29:27,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:29:27,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:29:27,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:29:27,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:29:27,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:29:27,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:29:27,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:29:27,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:29:27,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:29:27,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:29:27,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:29:27,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:29:27,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:29:27,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:29:27,708 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:29:27,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:29:27,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:29:27,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:29:27,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:29:27,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:29:27,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:29:27,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:29:27,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:29:27,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:29:27,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:29:27,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:29:27,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:29:27,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:29:27,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:29:27,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:29:27,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:29:27,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:29:27,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:29:27,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:29:27,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:29:27,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:29:27,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:29:27,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:29:27,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:29:27,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:29:27,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:29:27,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:29:28,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:29:28,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:29:28,004 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:29:28,005 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label08.c [2020-10-13 06:29:28,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90c6e7ee3/58f02fb859784b90bb1e2b5a856d1c55/FLAG7d6171ea8 [2020-10-13 06:29:28,825 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:29:28,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label08.c [2020-10-13 06:29:28,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90c6e7ee3/58f02fb859784b90bb1e2b5a856d1c55/FLAG7d6171ea8 [2020-10-13 06:29:28,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90c6e7ee3/58f02fb859784b90bb1e2b5a856d1c55 [2020-10-13 06:29:28,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:29:28,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:29:28,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:29:28,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:29:28,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:29:28,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:29:28" (1/1) ... [2020-10-13 06:29:28,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e979d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:28, skipping insertion in model container [2020-10-13 06:29:28,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:29:28" (1/1) ... [2020-10-13 06:29:28,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:29:29,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:29:30,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:29:30,633 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:29:31,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:29:31,567 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:29:31,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31 WrapperNode [2020-10-13 06:29:31,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:29:31,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:29:31,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:29:31,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:29:31,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31" (1/1) ... [2020-10-13 06:29:31,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31" (1/1) ... [2020-10-13 06:29:31,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31" (1/1) ... [2020-10-13 06:29:31,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31" (1/1) ... [2020-10-13 06:29:31,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31" (1/1) ... [2020-10-13 06:29:31,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31" (1/1) ... [2020-10-13 06:29:31,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31" (1/1) ... [2020-10-13 06:29:31,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:29:31,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:29:31,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:29:31,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:29:31,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:29:31,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:29:31,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:29:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:29:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:29:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:29:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:29:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:29:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:29:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:29:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:29:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:29:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:29:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:29:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:29:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:29:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:29:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:29:36,002 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:29:36,002 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:29:36,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:29:36 BoogieIcfgContainer [2020-10-13 06:29:36,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:29:36,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:29:36,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:29:36,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:29:36,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:29:28" (1/3) ... [2020-10-13 06:29:36,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7784d43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:29:36, skipping insertion in model container [2020-10-13 06:29:36,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:29:31" (2/3) ... [2020-10-13 06:29:36,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7784d43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:29:36, skipping insertion in model container [2020-10-13 06:29:36,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:29:36" (3/3) ... [2020-10-13 06:29:36,022 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label08.c [2020-10-13 06:29:36,032 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:29:36,041 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:29:36,055 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:29:36,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:29:36,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:29:36,082 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:29:36,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:29:36,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:29:36,082 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:29:36,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:29:36,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:29:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:29:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-13 06:29:36,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:29:36,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:29:36,207 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:29:36,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:29:36,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2032891658, now seen corresponding path program 1 times [2020-10-13 06:29:36,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:29:36,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201206387] [2020-10-13 06:29:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:29:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:37,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:42,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:42,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-13 06:29:42,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:29:42,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 06:29:42,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:29:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:29:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:29:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:29:44,592 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-10-13 06:29:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:29:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:44,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:44,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:44,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:29:44,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:44,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:29:44,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:29:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:29:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:29:49,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201206387] [2020-10-13 06:29:49,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:29:49,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:29:49,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203515491] [2020-10-13 06:29:49,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:29:49,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:29:49,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:29:49,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:29:49,262 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:29:49,906 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:29:50,468 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-13 06:29:52,837 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-13 06:29:54,771 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-13 06:29:55,900 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2020-10-13 06:30:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:30:05,003 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:30:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:30:05,006 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 819 [2020-10-13 06:30:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:30:05,070 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:30:05,070 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:30:05,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:30:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:30:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:30:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:30:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:30:05,235 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 819 [2020-10-13 06:30:05,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:30:05,237 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:30:05,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:30:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:30:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-10-13 06:30:05,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:30:05,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:30:05,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:30:05,291 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:30:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:30:05,292 INFO L82 PathProgramCache]: Analyzing trace with hash 422641497, now seen corresponding path program 1 times [2020-10-13 06:30:05,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:30:05,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266008804] [2020-10-13 06:30:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:30:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:10,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:10,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 854 [2020-10-13 06:30:10,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:30:10,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 06:30:10,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:10,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:30:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:30:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-13 06:30:10,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:12,310 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 26 [2020-10-13 06:30:12,444 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 26 [2020-10-13 06:30:13,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:30:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:13,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:13,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:13,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:30:13,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:13,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:30:13,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:13,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:13,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:30:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:13,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:13,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:30:13,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:30:13,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:30:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:30:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:30:17,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266008804] [2020-10-13 06:30:17,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:30:17,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:30:17,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448132422] [2020-10-13 06:30:17,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:30:17,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:30:17,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:30:17,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:30:17,215 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-13 06:30:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:30:31,445 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-13 06:30:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:30:31,451 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 838 [2020-10-13 06:30:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:30:31,465 INFO L225 Difference]: With dead ends: 3123 [2020-10-13 06:30:31,465 INFO L226 Difference]: Without dead ends: 2276 [2020-10-13 06:30:31,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:30:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-13 06:30:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-13 06:30:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-13 06:30:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-13 06:30:31,533 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 838 [2020-10-13 06:30:31,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:30:31,534 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-13 06:30:31,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:30:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-13 06:30:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-13 06:30:31,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:30:31,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:30:31,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:30:31,548 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:30:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:30:31,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1381314495, now seen corresponding path program 1 times [2020-10-13 06:30:31,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:30:31,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512112921] [2020-10-13 06:30:31,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:30:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:36,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:36,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 861 [2020-10-13 06:30:36,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:30:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:30:36,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:30:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:30:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-13 06:30:36,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:39,581 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-13 06:30:39,740 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-13 06:30:39,877 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-13 06:30:40,006 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-13 06:30:40,147 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-10-13 06:30:40,341 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 50 [2020-10-13 06:30:40,595 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 52 [2020-10-13 06:30:40,852 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 48 [2020-10-13 06:30:41,090 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 45 [2020-10-13 06:30:41,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:30:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:41,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:41,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:30:41,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:41,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:30:41,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:30:41,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:30:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:41,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:30:41,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:30:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:30:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:30:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:30:46,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512112921] [2020-10-13 06:30:46,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:30:46,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:30:46,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999575185] [2020-10-13 06:30:46,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:30:46,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:30:46,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:30:46,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:30:46,469 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-13 06:30:47,087 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-13 06:30:52,548 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 117 [2020-10-13 06:30:53,704 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2020-10-13 06:30:54,092 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 115 [2020-10-13 06:30:54,512 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 112 [2020-10-13 06:30:55,172 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 109 [2020-10-13 06:30:56,789 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 106 [2020-10-13 06:31:01,179 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 101 [2020-10-13 06:31:01,598 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-13 06:31:01,782 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-13 06:31:07,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:31:07,816 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-13 06:31:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:31:07,822 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 845 [2020-10-13 06:31:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:31:07,838 INFO L225 Difference]: With dead ends: 4329 [2020-10-13 06:31:07,838 INFO L226 Difference]: Without dead ends: 2786 [2020-10-13 06:31:07,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:31:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-13 06:31:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-13 06:31:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-13 06:31:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-13 06:31:07,921 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 845 [2020-10-13 06:31:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:31:07,922 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-13 06:31:07,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:31:07,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-13 06:31:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-10-13 06:31:07,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:31:07,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:31:07,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:31:07,938 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:31:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:31:07,938 INFO L82 PathProgramCache]: Analyzing trace with hash -898268250, now seen corresponding path program 1 times [2020-10-13 06:31:07,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:31:07,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062580029] [2020-10-13 06:31:07,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:31:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:11,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:11,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 873 [2020-10-13 06:31:11,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:31:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3086 [2020-10-13 06:31:11,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:31:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:31:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-13 06:31:11,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:31:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:11,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:11,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:31:11,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:31:11,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:31:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:31:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:11,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:31:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:11,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:11,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:11,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:31:11,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:31:11,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:31:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:31:11,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:31:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:31:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:11,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:11,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:31:11,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:11,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:31:11,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:11,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:31:11,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:31:11,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:31:15,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062580029] [2020-10-13 06:31:15,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:31:15,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:31:15,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408929123] [2020-10-13 06:31:15,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:31:15,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:31:15,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:31:15,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:31:15,058 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-13 06:31:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:31:23,808 INFO L93 Difference]: Finished difference Result 5625 states and 7934 transitions. [2020-10-13 06:31:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:31:23,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 855 [2020-10-13 06:31:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:31:23,828 INFO L225 Difference]: With dead ends: 5625 [2020-10-13 06:31:23,828 INFO L226 Difference]: Without dead ends: 2715 [2020-10-13 06:31:23,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:31:23,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2020-10-13 06:31:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2715. [2020-10-13 06:31:23,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2020-10-13 06:31:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 2983 transitions. [2020-10-13 06:31:23,901 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 2983 transitions. Word has length 855 [2020-10-13 06:31:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:31:23,902 INFO L479 AbstractCegarLoop]: Abstraction has 2715 states and 2983 transitions. [2020-10-13 06:31:23,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:31:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 2983 transitions. [2020-10-13 06:31:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-13 06:31:23,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:31:23,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:31:23,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:31:23,919 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:31:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:31:23,920 INFO L82 PathProgramCache]: Analyzing trace with hash -468752770, now seen corresponding path program 1 times [2020-10-13 06:31:23,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:31:23,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666281166] [2020-10-13 06:31:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:31:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:24,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:29,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:29,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-13 06:31:29,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:31:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 06:31:29,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:31:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:31:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-13 06:31:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:31,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:31:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:31,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:31,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:31:31,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:31:31,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:31:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:31:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:31:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:31,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:31,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:31,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:31:31,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:31:31,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:31:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:31:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:31:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:31,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:31,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:31,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:31:31,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:31,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 06:31:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:31:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:31:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:31:36,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666281166] [2020-10-13 06:31:36,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:31:36,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:31:36,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688098536] [2020-10-13 06:31:36,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:31:36,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:31:36,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:31:36,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:31:36,800 INFO L87 Difference]: Start difference. First operand 2715 states and 2983 transitions. Second operand 19 states. [2020-10-13 06:31:37,926 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:31:40,162 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-13 06:31:41,631 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-13 06:31:45,652 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-10-13 06:31:47,026 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-13 06:31:47,290 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-13 06:31:47,787 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-10-13 06:31:51,135 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-13 06:31:51,326 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-13 06:31:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:31:52,707 INFO L93 Difference]: Finished difference Result 5401 states and 6171 transitions. [2020-10-13 06:31:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:31:52,708 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 963 [2020-10-13 06:31:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:31:52,725 INFO L225 Difference]: With dead ends: 5401 [2020-10-13 06:31:52,725 INFO L226 Difference]: Without dead ends: 3419 [2020-10-13 06:31:52,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:31:52,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2020-10-13 06:31:52,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 3419. [2020-10-13 06:31:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3419 states. [2020-10-13 06:31:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 3692 transitions. [2020-10-13 06:31:52,802 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 3692 transitions. Word has length 963 [2020-10-13 06:31:52,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:31:52,804 INFO L479 AbstractCegarLoop]: Abstraction has 3419 states and 3692 transitions. [2020-10-13 06:31:52,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:31:52,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 3692 transitions. [2020-10-13 06:31:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2020-10-13 06:31:52,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:31:52,824 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:31:52,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:31:52,824 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:31:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:31:52,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1583680726, now seen corresponding path program 1 times [2020-10-13 06:31:52,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:31:52,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885991303] [2020-10-13 06:31:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:31:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:53,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:53,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:54,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:58,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:58,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1099 [2020-10-13 06:31:58,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:31:58,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-13 06:31:58,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:31:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 06:31:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 515 [2020-10-13 06:31:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:59,405 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-10-13 06:31:59,542 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-10-13 06:31:59,739 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 33 [2020-10-13 06:31:59,933 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2020-10-13 06:32:00,109 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2020-10-13 06:32:00,266 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 37 [2020-10-13 06:32:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:32:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:00,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:00,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:32:00,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:00,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:32:00,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:32:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:32:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:32:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:00,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:00,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:32:00,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:32:00,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:32:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:32:00,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:00,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 06:32:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:00,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:00,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 06:32:00,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 06:32:00,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:32:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-13 06:32:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:00,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:32:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:00,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:00,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:32:00,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:00,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:32:00,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:32:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 06:32:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 251 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 06:32:05,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885991303] [2020-10-13 06:32:05,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:32:05,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:32:05,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783967926] [2020-10-13 06:32:05,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:32:05,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:32:05,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:32:05,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:32:05,589 INFO L87 Difference]: Start difference. First operand 3419 states and 3692 transitions. Second operand 17 states. [2020-10-13 06:32:08,170 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-10-13 06:32:08,468 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2020-10-13 06:32:10,146 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2020-10-13 06:32:13,114 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2020-10-13 06:32:13,846 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2020-10-13 06:32:14,268 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-10-13 06:32:14,556 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-10-13 06:32:19,007 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-10-13 06:32:19,378 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-10-13 06:32:19,632 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2020-10-13 06:32:20,184 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-10-13 06:32:22,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:32:22,433 INFO L93 Difference]: Finished difference Result 6613 states and 7330 transitions. [2020-10-13 06:32:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:32:22,434 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1079 [2020-10-13 06:32:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:32:22,449 INFO L225 Difference]: With dead ends: 6613 [2020-10-13 06:32:22,449 INFO L226 Difference]: Without dead ends: 3927 [2020-10-13 06:32:22,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2020-10-13 06:32:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2020-10-13 06:32:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3927. [2020-10-13 06:32:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3927 states. [2020-10-13 06:32:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 4208 transitions. [2020-10-13 06:32:22,542 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 4208 transitions. Word has length 1079 [2020-10-13 06:32:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:32:22,543 INFO L479 AbstractCegarLoop]: Abstraction has 3927 states and 4208 transitions. [2020-10-13 06:32:22,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:32:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 4208 transitions. [2020-10-13 06:32:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2020-10-13 06:32:22,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:32:22,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:32:22,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:32:22,565 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:32:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:32:22,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1325217773, now seen corresponding path program 1 times [2020-10-13 06:32:22,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:32:22,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809924455] [2020-10-13 06:32:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:32:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:23,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:26,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:27,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:27,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1116 [2020-10-13 06:32:27,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:32:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-13 06:32:27,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:32:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 288 [2020-10-13 06:32:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 744 [2020-10-13 06:32:27,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:28,987 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-13 06:32:29,129 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-13 06:32:29,274 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-13 06:32:29,404 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-13 06:32:29,536 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-13 06:32:29,681 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-13 06:32:29,820 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-13 06:32:30,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:32:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:30,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:30,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:30,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:32:30,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:30,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:32:30,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:32:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:32:30,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:30,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:32:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:30,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:30,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-13 06:32:30,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 06:32:30,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:32:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-13 06:32:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:32:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:32:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:32:30,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:32:30,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 06:32:30,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:32:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 06:32:30,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:32:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:32:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:32:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 06:32:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:32:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:32:39,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809924455] [2020-10-13 06:32:39,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:32:39,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:32:39,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808902285] [2020-10-13 06:32:39,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:32:39,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:32:39,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:32:39,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:32:39,068 INFO L87 Difference]: Start difference. First operand 3927 states and 4208 transitions. Second operand 19 states. [2020-10-13 06:32:42,332 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:32:42,542 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-13 06:32:44,451 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 06:32:48,638 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:32:48,846 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-13 06:32:50,592 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-13 06:32:53,494 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-13 06:32:55,427 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:32:55,593 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:32:59,088 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-13 06:32:59,615 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-13 06:33:00,549 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:33:01,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:33:01,956 INFO L93 Difference]: Finished difference Result 7856 states and 8669 transitions. [2020-10-13 06:33:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:33:01,965 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1098 [2020-10-13 06:33:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:33:01,982 INFO L225 Difference]: With dead ends: 7856 [2020-10-13 06:33:01,983 INFO L226 Difference]: Without dead ends: 4662 [2020-10-13 06:33:01,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:33:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2020-10-13 06:33:02,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 4662. [2020-10-13 06:33:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4662 states. [2020-10-13 06:33:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4662 states to 4662 states and 4951 transitions. [2020-10-13 06:33:02,093 INFO L78 Accepts]: Start accepts. Automaton has 4662 states and 4951 transitions. Word has length 1098 [2020-10-13 06:33:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:33:02,094 INFO L479 AbstractCegarLoop]: Abstraction has 4662 states and 4951 transitions. [2020-10-13 06:33:02,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:33:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4662 states and 4951 transitions. [2020-10-13 06:33:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1107 [2020-10-13 06:33:02,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:33:02,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:33:02,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:33:02,120 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:33:02,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:33:02,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1643826668, now seen corresponding path program 1 times [2020-10-13 06:33:02,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:33:02,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513897764] [2020-10-13 06:33:02,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:33:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:02,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:06,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:07,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:07,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1126 [2020-10-13 06:33:07,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:33:07,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5158 [2020-10-13 06:33:07,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:33:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 298 [2020-10-13 06:33:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 675 [2020-10-13 06:33:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:33:08,841 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-13 06:33:08,965 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-10-13 06:33:09,087 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-13 06:33:09,688 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-13 06:33:09,856 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-13 06:33:09,999 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-13 06:33:10,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:33:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:10,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:10,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:33:10,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:10,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:33:10,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:33:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:33:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:33:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:33:10,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:33:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:10,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:10,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:33:10,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:10,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:33:10,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:33:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:33:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:33:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:33:10,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:33:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:10,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:10,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-13 06:33:10,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:10,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 06:33:10,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:33:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:33:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 262 [2020-10-13 06:33:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:33:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:33:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:33:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:33:10,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:33:10,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 06:33:10,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:33:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:33:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:33:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:33:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:33:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:33:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0